Thermal Magnetic Circuit Breakers

Thermal magnetic circuit breakers are devices that provide protection against overcurrent in circuits. Circuit breakers use an automatically operated electrical switch to disrupt the flow of current when an overload or short circuit is detected. Thermal magnetic circuit breakers do this using an electromagnet and bimetallic strips. 


Circuit breakers provide more sophisticated protection against overcurrent than a simple fuse. Fuses simply burn out and have to be replaced, whereas circuit breakers just need to be reset.


How do thermal magnetic circuit breakers work?

In thermal magnetic circuit breakers, there are two ways the flow of current might be detected and disrupted. In the event of a short circuit, the electromagnet rapidly trips the switch. If the overload is smaller, over a longer period of time, the bimetallic strips will instead eventually react to trip the switch. 


What are thermal magnetic circuit breakers used for?

Thermal magnetic circuit breakers are most often used in distribution boards. They make up part of the subsidiary circuits in the broader electrical supply system, protecting against overcurrent.


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Omschrijving Prijs Current Rating Number of Poles Range Voltage Rating Width Series Application Break Time Breaking Capacity at Maximum Voltage Rating Circuit Breaker Type Mounting Hole Diameter Mounting Hole Length Mounting Hole Size Mounting Hole Width
RS-stocknr. 284-6101
Fabrikantnummer4410.0106
FabrikantSchurter
€ 19,20
Each
Aantal stuks
10A 1 - 240V ac 11.5mm T12 - - - - - - - -
RS-stocknr. 881-0842
FabrikantnummerCA1-B0-34-640-121-C
€ 31,06
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Aantal stuks
40A 1 - - - C General Purpose Medium 5000 A @ 125/250 V dc, 10000 A @ 277 V ac MCCB - 19.3mm 19.3 x 52.37mm 52.4mm
RS-stocknr. 899-1664
Fabrikantnummer2DU32R
FabrikantAltech
€ 20,47
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Aantal stuks
32A 2 - 480Y/277V - R Appliance Circuit, Control Transformers, Power Supplies, Power Supplies and Reactive Loads, Sensitive Electronics, UL1077 Application Time Delay 10 kA MCCB - - - -
RS-stocknr. 284-5883
Fabrikantnummer4400.0052
FabrikantSchurter
€ 8,48
Each
Aantal stuks
12A 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 728-8645
Fabrikantnummer106-P10-000040-2A
FabrikantETA
€ 14,25
Each
Aantal stuks
2A 1 - - - 106 - - - - - - - -
RS-stocknr. 323-9009
FabrikantnummerGB2CD07
€ 33,22
Each
Aantal stuks
2A 1P + N - 250V ac 15mm GB2 - - 1 (dc) kA, 15 (ac) kA - - - - -
RS-stocknr. 849-5945
FabrikantnummerCBC-50HB
FabrikantCooper Bussmann
€ 9,75
Each (In a Pack of 10)
Aantal stuks
50A - - 14V dc - CBC-HB - - - - - - - -
RS-stocknr. 868-9193
Fabrikantnummer4430.2299
FabrikantSchurter
€ 22,27
Each
Aantal stuks
15A - - 220 → 240V - - - - - MCB - - - -
RS-stocknr. 416-691
FabrikantnummerAF1X0038021F2D
FabrikantCarlingswitch
€ 21,56
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 312-3639
FabrikantnummerGB2CB06
€ 19,00
Each
Aantal stuks
1A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 50 (ac) kA - - - - -
RS-stocknr. 286-4020
Fabrikantnummer3120-F551-H7T1-W02D-20A
FabrikantETA
€ 22,54
Each
Aantal stuks
20A 2 - - 25mm 3120 - - - - - - - -
RS-stocknr. 272-909
FabrikantnummerGV3P25
€ 163,60
Each
Aantal stuks
- 3 TeSys 690V ac 55mm GV3 - - 6 kA - - - - -
RS-stocknr. 899-3067
Fabrikantnummer2C1UL
FabrikantAltech
€ 58,00
Each
Aantal stuks
1A 2 - 480Y/277V - UL Lighting and Control Circuit Applications, Low Inrush Motors, Receptacles, Resistive Load, UL489 Application, Wiring Protection Time Delay 10 kA MCCB - - - -
RS-stocknr. 899-4931
Fabrikantnummer3D1UM
FabrikantAltech
€ 46,063
Each (In a Pack of 4)
Aantal stuks
1A 3 - 480Y/277V - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformers, UL508 Application Time Delay 10 kA MCCB - - - -
RS-stocknr. 173-9812
Fabrikantnummer4400.0008
FabrikantSchurter
€ 5,023
Each (In a Box of 100)
Aantal stuks
1A 1 - 240V ac - T11 - - - - - - - -
RS-stocknr. 879-8641
FabrikantnummerAA1-B0-34-625-3B1-C
€ 14,46
Each
Aantal stuks
25A 1 - - - A Generators, Marine Applications, Military, Renewable Energy Systems, Telecommunications, Welder Medium 5000 A @ 80 V dc - 16mm - - -
RS-stocknr. 312-3689
FabrikantnummerGB2CB12
€ 19,00
Each
Aantal stuks
6A 1 - 277 V ac, 415 V ac 15mm GB2 - - 1 (dc) kA, 1.5 (ac) kA - - - - -
RS-stocknr. 782-0933
FabrikantnummerW31-X2M1G-15
FabrikantTE Connectivity
€ 23,57
Each
Aantal stuks
15A 1 - 50 V dc, 240 V ac 0.69in W31 - - - - - - - -
RS-stocknr. 899-1816
Fabrikantnummer2EU05
FabrikantAltech
€ 43,37
Each
Aantal stuks
500mA 2 - - - V-EA AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, High Efficiency Motors, UL508 Application, Which have Exceedingly High Inrush Current Time Delay 10 kA MCCB - - - -
RS-stocknr. 729-2758
Fabrikantnummer2-5700-IG2-P10-DD-000040-10A
FabrikantETA
€ 23,44
Each
Aantal stuks
10A 1 - - - 2 5700 - - - - - - - -
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